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opoplawski opened this issue Sep 22, 2013 · 8 comments · Fixed by #5364
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Support atlas 3.10 #3774

opoplawski opened this issue Sep 22, 2013 · 8 comments · Fixed by #5364
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17 - Task component: documentation component: numpy.distutils

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@opoplawski
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With atlas 3.10 the library names have changed, either libsatlas for serial or libtatlas for threaded.
@rgommers
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I guess this already works if you provide the right name in site.cfg? So the issue is to fix the autodetection in distutils/system_info.py?

@TomasTomecek TomasTomecek mentioned this issue Sep 23, 2013
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@opoplawski
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Actually, it doesn't work with this in site.cfg either:

[blas_opt]
libraries = tatlas
#
[lapack_opt]
libraries = tatlas
8000

@opoplawski
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Okay, I can override with:

[atlas]
library_dirs = /usr/lib64/atlas
atlas_libs = tatlas

but site.cfg states that [atlas] is deprecated and should not be used.

@TomasTomecek
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As Orion wrote, there is a section in site.cfg.example in numpy 1.7 which states that using [atlas], [lapack_atlas], etc. is deprecated. As I checked master, this warning is gone and in fact using section [atlas] is recommended. (This commit changed it.)

So I guess that Orion's solution is correct.

@charris
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charris commented Sep 25, 2013

Does site.cfg.example need some documentation about 3.10?

@opoplawski
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With just:

$ cat numpy-1.8.0rc2/site.cfg
[atlas]
library_dirs = /usr/lib64/atlas
atlas_libs = satlas

I get:

Python 2.7.5 (default, Oct  8 2013, 12:16:00)
[GCC 4.8.1 20130920 (Red Hat 4.8.1-10)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from numpy.distutils.system_info import get_info
>>> get_info('atlas', 0)
/usr/lib64/python2.7/site-packages/numpy/distutils/system_info.py:1062: UserWarning:
*********************************************************************
    Could not find lapack library within the ATLAS installation.
*********************************************************************

  warnings.warn(message)
{'libraries': ['satlas'], 'library_dirs': ['/usr/lib64/atlas'], 'define_macros': [('ATLAS_WITHOUT_LAPACK', None)], 'language': 'c', 'include_dirs': ['/usr/include']}

Is there some way to tell numpy that lapack is in there?

@opoplawski
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Any change here?

@charris
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charris commented Dec 10, 2014

Hmm, seems the change was in ATLAS 3.9.33 released 01/21/11, so we should probably fix this in numpy.

@charris charris mentioned this issue Dec 11, 2014
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charris added a commit to charris/numpy that referenced this issue Dec 24, 2014
@charris
ENH: Add support for ATLAS > 3.9.33.
dd0732e 
Recent ATLAS combines the previous libraries into two

* libsatlas -- single threaded.
* libtatlas -- threaded.

This fix is a bit of hack in that ATLAS > 3.9.33 is treated as a new,
separate library covered by atlas_3_10_info, but the latter derived
from atlas_info, which treats the cblas, atlas, and atlas_lapack
libraries separately, so the new info has a bit of repetition.

The alternative would be to rewrite atlas_info, but that can wait
on a larger cleanup of the build system.

Closes numpy#3774.
@charris charris mentioned this issue Dec 24, 2014
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ENH: Add support for ATLAS > 3.9.33. charris/numpy
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